IBM System General Information

• Operating system
• Hardware
• Software
• Some z/OS surprises

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• The operating system, z/OS 1.7, is a current generation of what was formerly OS/370, MVS/XA, MVS/ESA and OS390. Here is a more detailed z/OS explanation.
• The system is running z/OS, version V1R7 "base elements"
• Additional elements:

• Security server (RACF)
• SDSF
• DFSORT
• Java 1.3 for z/OS
• Enterprise COBOL for z/OS
• Language Environment for z/OS
• RMF
• USS
• C/C++ without debug
• InfoPrint server
• See also the list of IBM and third-party utilities

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See the Hardware page for details on the CPU, disks, tapes, printers, and their configuration. (The hardware can be dynamically reconfigured and shifted between Test and Production so the exact hardware allocations may differ.)

 

The hardware has been split into two "Logical PARtitions":

 

• LPAR1 is allocated to Production work
• LPAR2 is the Test system

Diagrams of the IP-connectivity:

• LPAR1
• LPAR2

Domain Names associated with LPAR1 and LPAR2.

 

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Applications, IBM and 3rd-Party

 

• Applications
• Utilities and major "subsystems" running under z/OS.
• Third-party software

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• z/OS runs a POSIX-compliant UNIX on both LPAR1 and LPAR2 called Unix Systems Services or USS.
• The LPAR2 Test environment supports the entire CICS and IDMS test systems and can be tailored to test the majority of functions of the Production system prior to systems and applications enhancements being moved into production.
• z/OS is capable of being a Web server.
• z/OS can run Linux in a third LPAR.

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